Edit report at http://bugs.php.net/bug.php?id=52935&edit=1
ID: 52935
Comment by: richard_hu at 163 dot com
Reported by: laruence at yahoo dot com dot cn
Summary: call exit in user_error_handler cause stream relate
core
Status: Open
Type: Bug
Package: Streams related
Operating System: any
PHP Version: 5.2.14
Block user comment: N
Private report: N
New Comment:
I have the similar issue, which confused me for quite some time. Though
I'm not sure whether it's caused by setting the error handler.
On my linux box,using php 5.2.14, I see many apache core files after
several days. and BT looks mostly like this:
(gdb) bt
#0 _zend_mm_free_int (heap=0x6b2f00, p=0x21) at
/home/work/php-5.2.14/Zend/zend_alloc.c:1948
#1 0x0000002a95d53069 in php_stream_tidy_wrapper_error_log
(wrapper=0x2a962116e0) at
/home/work/php-5.2.14/main/streams/streams.c:192
#2 0x0000002a95d5605a in _php_stream_open_wrapper_ex (
path=0x2a9a3267b0
"http://jp01-testing-psp01.jp01:8080/query_patterns/index";,
mode=0x2a95e5c804 "rb",
options=12, opened_path=0x0, context=0x0) at
/home/work/php-5.2.14/main/streams/streams.c:1899
#3 0x0000002a95cd81b1 in zif_file_get_contents (ht=-1776162144,
return_value=0x2a9a15cdd8, return_value_ptr=Variable "return_value_ptr"
is not available.
)
at /home/work/php-5.2.14/ext/standard/file.c:541
#4 0x0000002a95d78114 in zend_call_function (fci=0x7fbfff8200,
fci_cache=Variable "fci_cache" is not available.
) at /home/work/php-5.2.14/Zend/zend_execute_API.c:1063
#5 0x0000002a95d78a56 in call_user_function_ex (function_table=Variable
"function_table" is not available.
) at /home/work/php-5.2.14/Zend/zend_execute_API.c:650
#6 0x0000002a95cce1c8 in zif_call_user_func_array (ht=Variable "ht" is
not available.
) at /home/work/php-5.2.14/ext/standard/basic_functions.c:5217
#7 0x0000002a95da57ce in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfff8560) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:200
#8 0x0000002a95da4de1 in execute (op_array=0x89b390) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#9 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfff9490) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#10 0x0000002a95da4de1 in execute (op_array=0x2a9a1534e0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#11 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffa9c0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#12 0x0000002a95da4de1 in execute (op_array=0x2a99cce868) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#13 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbffface0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#14 0x0000002a95da4de1 in execute (op_array=0x2a99e83f08) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#15 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffb050) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#16 0x0000002a95da4de1 in execute (op_array=0x2a99e53098) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#17 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffb420) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#18 0x0000002a95da4de1 in execute (op_array=0x2a99e52f38) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#19 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffb9b0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#20 0x0000002a95da4de1 in execute (op_array=0x2a99e52dd0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#21 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffbfa0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#22 0x0000002a95da4de1 in execute (op_array=0x2a968894b8) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#23 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffc5d0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#24 0x0000002a95da4de1 in execute (op_array=0x2a96868e40) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#25 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffc9d0) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#26 0x0000002a95da4de1 in execute (op_array=0x2a96909030) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#27 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fbfffce10) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:234
#28 0x0000002a95da4de1 in execute (op_array=0x2a96821cf8) at
/home/work/php-5.2.14/Zend/zend_vm_execute.h:92
#29 0x0000002a95d85ea4 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /home/work/php-5.2.14/Zend/zend.c:1134
#30 0x0000002a95d42dcd in php_execute_script (primary_file=0x7fbffff2e0)
at /home/work/php-5.2.14/main/main.c:2036
#31 0x0000002a95e154a6 in php_handler (r=0x8670d8) at
/home/work/php-5.2.14/sapi/apache2handler/sapi_apache2.c:639
#32 0x0000000000436cf3 in ap_run_handler (r=0x8670d8) at config.c:157
#33 0x0000000000437191 in ap_invoke_handler (r=0x8670d8) at
config.c:372
#34 0x00000000004666c0 in ap_process_request (r=0x8670d8) at
http_request.c:258
#35 0x0000000000463ead in ap_process_http_connection (c=0x855238) at
http_core.c:190
#36 0x000000000043d6c3 in ap_run_process_connection (c=0x855238) at
connection.c:43
#37 0x000000000047f824 in child_main (child_num_arg=Variable
"child_num_arg" is not available.
) at prefork.c:650
#38 0x000000000047fa44 in make_child (s=0x5ce498, slot=1) at
prefork.c:746
#39 0x000000000047fade in startup_children (number_to_start=4) at
prefork.c:764
#40 0x00000000004802ed in ap_mpm_run (_pconf=Variable "_pconf" is not
available.
) at prefork.c:985
#41 0x00000000004249b5 in main (argc=Variable "argc" is not available.
) at main.c:730
Previous Comments:
------------------------------------------------------------------------
[2010-10-04 12:16:06] laruence at yahoo dot com dot cn
in cli mode , this would not been happend ,
cause, the stream wrapper is a persistent struct , zend_bailout cause
the
err_count of stream wrapper struct not be zero when a new request
coming. which
means , you should run in apache handler or cgi/fastcgi.
in cli mode , there only one request loop.
sorry for my poor english,
and I think, you should make network unreachable, then will be tigger a
error
with message "Network unreachable",
------------------------------------------------------------------------
[2010-10-02 22:01:58] [email protected]
I can't reproduce this.
I also don't understand the problem conceptually.
php_stream_display_wrapper_errors is called before the bailout, not
after so how can PHP segfault there? I must be missing something.
Script (run via the CLI):
<?php
ini_set('default_socket_timeout', 3);
function err_handler(){
//var_dump(func_get_args());
exit;
return true;
}
set_error_handler('err_handler');
$client =
file_get_contents("http://www.laruence.com/ServiceNoWse.asmx?WSDL";);
---
I also made the site unreachable:
$ sudo iptables -L OUTPUT -n
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
DROP all -- 0.0.0.0/0 96.0.183.49
------------------------------------------------------------------------
[2010-09-28 04:35:12] laruence at yahoo dot com dot cn
there is some prombles in the example ,
1. the domain must be a valid domain
2. the envrion must can't connect to the internet
<?php
function err_handler(){
exit;
return true;
}
set_error_handler('err_handler');
$client =
file_get_contents("http://www.laruence.com/ServiceNoWse.asmx?WSDL";);
------------------------------------------------------------------------
[2010-09-27 23:42:21] [email protected]
Related to bug #52922
------------------------------------------------------------------------
[2010-09-27 17:31:32] laruence at yahoo dot com dot cn
Description:
------------
because in PHP exit is implements by set/longjmp
so the normal sequence
php_stream_wrapper_log_error
php_stream_display_wrapper_errors
-> php_error_docref1
php_stream_tidy_wrapper_error_log
when use set_error_handler, and call exit in use_handler,
cause the php_stream_tidy_wrapper_error_log to be miss called,
which cause wrap->err_count doesn't reset to zero after request
shutdown.
then cause the following code coredump in
php_stream_display_wrapper_errors
for (i = 0, l = 0; i < wrapper->err_count; i++) {
l += strlen(wrapper->err_stack[i]); //core
if (i < wrapper->err_count - 1) {
l += brlen;
}
}
Test script:
---------------
<?php
function err_handler(){
exit;
return true;
}
set_error_handler('err_handler');
$client = new
SoapClient("http://unreachable.com/ServiceNoWse.asmx?WSDL";);
Expected result:
----------------
normal exit
Actual result:
--------------
core dump
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=52935&edit=1
